<!doctype html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport"
          content="width=device-width, user-scalable=no, initial-scale=1.0, maximum-scale=1.0, minimum-scale=1.0">
    <meta http-equiv="X-UA-Compatible" content="ie=edge">
    <title>Document</title>
</head>
<style>
    .dong {
        width:100px;
        height:100px;
        text-align: center;
        line-height: 100px;
        margin:0 auto;
        border-radius: 50%;
        border-left:0;
        border-right:5px dotted #74D334;
        border-top:1px dotted #74D334;
        border-bottom:0;
        animation: dong  2s infinite linear ;
        color: red;
    }
    @keyframes dong {
            0% {
                border-left:0;
                border-right:5px dotted #74D334;
                border-top:1px dotted #74D334;
                border-bottom:0;
                color: red;
         }
    50% {
        border-top: 0px dotted #74D334;
        border-right: 5px dotted #74D334;
        border-bottom: 10px dotted #74D334;
        border-left: 12px dotted #74D334;
        transform: rotate(180deg);
        color: yellow;
    }
        100% {
            border-top: 0px dotted #74D334;
            border-right: 5px dotted #74D334;
            border-bottom: 10px dotted #74D334;
            border-left: 12px dotted #74D334;
            transform: rotate(360deg);
            color: green;
        }
    }
</style>
<body>
   <div class="dong">
       李小虎傻x
   </div>
</body>
</html>